Allow dynamic updating of authentication policies

net/http/http_auth_handler_digest.cc

Index: net/http/http_auth_handler_digest.cc
diff --git a/net/http/http_auth_handler_digest.cc b/net/http/http_auth_handler_digest.cc
index a5f96b1e25ffa0feac0aa5706cb0288c81894312..78c4a32ea0f298b1a648b24b0defd1bf923043d4 100644
--- a/net/http/http_auth_handler_digest.cc
+++ b/net/http/http_auth_handler_digest.cc
@@ -113,7 +113,7 @@ HttpAuth::AuthorizationResult HttpAuthHandlerDigest::HandleAnotherChallenge(
   // to differentiate between stale and rejected responses.
   // Note that the state of the current handler is not mutated - this way if
   // there is a rejection the realm hasn't changed.
-  if (!base::LowerCaseEqualsASCII(challenge->scheme(), "digest"))
+  if (!base::LowerCaseEqualsASCII(challenge->scheme(), kDigestAuthScheme))
     return HttpAuth::AUTHORIZATION_RESULT_INVALID;
 
   HttpUtil::NameValuePairsIterator parameters = challenge->param_pairs();
@@ -199,7 +199,7 @@ bool HttpAuthHandlerDigest::ParseChallenge(
   realm_ = original_realm_ = nonce_ = domain_ = opaque_ = std::string();
 
   // FAIL -- Couldn't match auth-scheme.
-  if (!base::LowerCaseEqualsASCII(challenge->scheme(), "digest"))
+  if (!base::LowerCaseEqualsASCII(challenge->scheme(), kDigestAuthScheme))
     return false;
 
   HttpUtil::NameValuePairsIterator parameters = challenge->param_pairs();